From fd1173e1134d2653cc7da0023c7ab15f06e4b90d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jose=20Luis=20Monta=C3=B1es?= <josele.96@gmail.com>
Date: Thu, 19 Mar 2026 22:37:40 +0100
Subject: [PATCH] Fix waveform auto-scroll: always follow regardless of zoom
 level

Remove conditional that could skip scroll update when zooming.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 js/waveform.js | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/js/waveform.js b/js/waveform.js
index 6bb163e..6911c7f 100644
--- a/js/waveform.js
+++ b/js/waveform.js
@@ -132,11 +132,8 @@ export function drawWaveforms() {
     // Visible width in steps
     const visibleSteps = wc.width / pxPerStep;
 
-    // Auto-scroll: always follow the latest data
-    if (totalPx > wc.width) {
-        state.waveScroll = state.timeStep - visibleSteps;
-    }
-    state.waveScroll = Math.max(0, state.waveScroll);
+    // Auto-scroll: always follow the latest data, keep cursor at right edge
+    state.waveScroll = Math.max(0, state.timeStep - visibleSteps);
 
     // Helper: convert simulation step to pixel X
     const tToX = (t) => (t - state.waveScroll) * pxPerStep;